25578130 has 8 divisors (see below), whose sum is σ = 46040652. Its totient is φ = 10231248.

The previous prime is 25578127. The next prime is 25578151. The reversal of 25578130 is 3187552.

It can be written as a sum of positive squares in 2 ways, for example, as 24216241 + 1361889 = 4921^2 + 1167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25578092 and 25578101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278897 + ... + 1278916.

Almost surely, 2^25578130 is an apocalyptic number.

25578130 is a deficient number, since it is larger than the sum of its proper divisors (20462522).

25578130 is a wasteful number, since it uses less digits than its factorization.

25578130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557820.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25578130 is about 5057.4825753531. The cubic root of 25578130 is about 294.6385691378.

The spelling of 25578130 in words is "twenty-five million, five hundred seventy-eight thousand, one hundred thirty".